"Flutter animation series" combined animation

Introduction to Lao Meng: in the previous article Summary of 25 animation components in Flutter animation series http://laomengit.com/flutter/module/animated_1/ "Flutter animation series" Google engineers take you to choose the flutter animation control: http://laomengit.com/flutter/module/animated_choose/ In a project, the anim ...

Posted by kellz on Sun, 05 Apr 2020 23:38:34 -0700

Realizing the snapshot backup function of "copy on write" based on rsync and ln

1, Fundamentals Here, "copy on write" is enclosed with a quotation mark, because this is specifically for the copy on write effect when rsync backup is used, rather than the actual copy on write effect. Its purpose is as follows: After backing up the data using rsync, create a snapshot immediately: The data state of the snapsh ...

Posted by primuz on Mon, 06 Apr 2020 00:17:49 -0700

JavaScript -- getting started with JS

1. Introduction to JavaScript JavaScript is an interpretive programming language for HTML and web. It is also a weak type lightweight script language with function priority. It can interact with HTML front-end pages without precompiling. It supports cross platform operation and can be used in multiple platforms (such as Windows, Linux, Mac, And ...

Posted by TutorMe on Mon, 06 Apr 2020 02:53:25 -0700

The key implementation of HPA lateral expansion of kubernetes controller

HPA is the implementation of horizontal scaling in k8s. There are many ideas that can be used for reference, such as delay queue, time series window, change event mechanism, stability consideration and other key mechanisms. Let's learn the key implementation of the big guys together 1. Basic concepts As the implementation of general horizontal ...

Posted by insrtsnhere13 on Mon, 06 Apr 2020 01:18:40 -0700

The realization principle of window function in spark and hive

Window function is often used in work and often asked in interview. Do you know the implementation principle behind it? Starting from the problems encountered in a business, this paper discusses the data flow principle of window function in hsql, and gives a solution to this problem at the end of the article. ​   1, Business background Fi ...

Posted by moiseszaragoza on Mon, 06 Apr 2020 04:05:56 -0700